chuck grassley about the future of the legislation. take a look. >> a few ways to improve the bill all for an amendment when we start mark-up in may and let's vote on it. i say that particularly those who were pointing to what happened. the terrible tragedy in boston as a -- i would say an excuse for not doing a bill or delaying it many months oer years. >> i never said that. >> i didn't say you did, sir. >> i didn't say -- >> i didn't say you did. i don't mean you, mr. grassley. >> mr. chairman, i don't appreciate the senator demeaning the witnesses that have come here. >> earlier, senator patrick leahy who chairs the judiciary committee opened the hearing with some tough words for his republican counterparts. >> last week, opponents of comprehensive immigration reform began to exploit the boston marathon bombing. i urge restraint in that regard. refugees and asylum seekers have enriched the fabric of this country from our founding. let no one be so cruel as try to use the heinous acts of these two young men last week to derail the dreams and futures of millions of hardworking people.